If Frank was around today, I'd bet he'd be making his records solo using a DAW (Digital Audio Workstation), sampling, etc....
Frank started using digital recording in 1983 when he and Mark Pinske were remastering and reconstructing albums where the master tapes had literally lost oxide or the recording was screwed up in some other way. They digitally recorded everything Frank did live using a recording truck and digitally rerecorded all the analog tapes they could find. Frank eventually ordered the two Ampex tape system to be chucked out of the control room.